Invention Grant
- Patent Title: Overlay class F choke
- Patent Title (中): 覆盖类F阻塞
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Application No.: US13226843Application Date: 2011-09-07
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Publication No.: US09030256B2Publication Date: 2015-05-12
- Inventor: David E. Jones , Terry J. Stockert , William David Southcombe , Chris Levesque , Scott Yoder
- Applicant: David E. Jones , Terry J. Stockert , William David Southcombe , Chris Levesque , Scott Yoder
- Applicant Address: US NC Greensboro
- Assignee: RF Micro Devices, Inc.
- Current Assignee: RF Micro Devices, Inc.
- Current Assignee Address: US NC Greensboro
- Agency: Withrow & Terranova, P.L.L.C.
- Main IPC: H03F3/45
- IPC: H03F3/45 ; H03F3/72 ; H03F1/02 ; H03F3/60 ; H03G3/00 ; H03F3/195 ; H03F3/24 ; H03F3/21

Abstract:
Embodiments of the present disclosure relate to an overlay class F choke of a radio frequency (RF) power amplifier (PA) stage and an RF PA amplifying transistor of the RF PA stage. The overlay class F choke includes a pair of mutually coupled class F inductive elements, which are coupled in series between a PA envelope power supply and a collector of the RF PA amplifying transistor. In one embodiment of the RF PA stage, the RF PA stage receives and amplifies an RF stage input signal to provide an RF stage output signal using the RF PA amplifying transistor. The collector of the RF PA amplifying transistor provides the RF stage output signal. The PA envelope power supply provides an envelope power supply signal to the overlay class F choke. The envelope power supply signal provides power for amplification.
Public/Granted literature
- US20120229210A1 OVERLAY CLASS F CHOKE Public/Granted day:2012-09-13
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